Magnus warlord trait is "know an additional power" he is still a Lord of War, he DOES NOT have the "re roll 1's" invulnerable aura.

The Mutalith Vortex Beast has an Invul save, it has 14 wounds, it has identical regen to daemon engines (regain 1 wound a turn), it assists units around it rolled for during the shooting phase on a random table, the table has either 3 or 6 possible outcomes (re-roll assault rolls being one such outcome). The buffs are given within a certain aura.

Rubrics and Scarab Occult both gain access to spells on the unit champions, no telling if its "any" spell, or just the Tzeentch lore table.

Tzaangors now have Death to the False Emperor and can be up to units of 40, a unit of 20+ gain +1 to the "to hit" rolls.

The Legion Tactic gives every spell a 6” bonus to range.

Glamour of tzeentch is a new spell, -1 to hit a Thousand Sons unit.

Doombolt has a high cast value, deals D3 mortals, and halves the move distance of the unit hit in the next turn

Temporal Manipulation is a low cast spell that gives the caster a re-roll for later in turn.

Fate-caster great bows hits on 6's Negate wound roll and automatically go to damage step. SPECIFICALLY *NOT* mortal wounds, I have heard different values for Damage, one being straight 3, the other being D3 per. same with number of shots, someone mentioned D3 assault per guy but we know its more then 1 per model.

Access to Veterans of the Long War stratagem.

A "deepstrike" relic - Once per game pick a unit within a short distance of the caster, immediately redepoy that unit via deepstrike.

There is also a deepstrike stratagem for thousand sons, nominate a unit pre-game and they may deepstrike for 2CP.